Who has been buying T-Gaia Corporation stock?

6 distinct investors have filed 15 disclosed large-shareholding filings in T-Gaia Corporation (3738), most recently on 2025-03-04. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does T-Gaia Corporation have?

T-Gaia Corporation has 15 buy-side and 10 sell-side disclosures on record, covering ¥50.3B ($324.2M) in total reported value, spanning 2021-10-13 to 2025-03-04.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

T-Gaia Corporation 3738

Company

株式会社ティーガイアT-Gaia Corporation

Investors

Buys

Total Value

¥50.3B ($324.2M)

Avg Return

+24.87%

Last Filing

2025-03-04

T-Gaia Corporation (3738) has 15 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥50.3B ($324.2M) in reported transaction value. The earliest filing StockDrifts holds for T-Gaia Corporation is dated 2021-10-13; the most recent is 2025-03-04. Across these filings the average return since disclosure is +24.87%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2025-03-04	BUY	unknown	株式会社BCJ-82-1 BCJ-82-1 Co., Ltd.	activist	11.7M	¥2,659	-	-
2025-03-04	SELL	unknown	光通信株式会社 Hikari Tsushin K.K.	unknown	0	¥2,659	+0.0%	¥12.6B ($81.2M)
2025-03-04	SELL	unknown	株式会社UH Partners 2 UH Partners 2, Inc.	unknown	0	¥2,659	+0.0%	¥14.7B ($94.7M)
2025-03-04	SELL	unknown	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	unknown	0	¥2,659	+0.0%	¥11.1B ($71.8M)
2025-03-04	SELL	unknown	株式会社エスアイエル SIL Co., Ltd.	unknown	0	¥2,659	+0.0%	¥4.5B ($28.9M)
2025-03-04	SELL	unknown	光通信株式会社 Hikari Tsushin K.K.	unknown	0	¥2,659	+0.0%	¥12.6B ($81.2M)
2025-03-04	SELL	unknown	株式会社UH Partners 2 UH Partners 2, Inc.	unknown	0	¥2,659	+0.0%	¥14.7B ($94.7M)
2025-03-04	SELL	unknown	株式会社エスアイエル SIL Co., Ltd.	unknown	0	¥2,659	+0.0%	¥4.5B ($28.9M)
2025-03-04	SELL	unknown	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	unknown	0	¥2,659	+0.0%	¥11.1B ($71.8M)
2025-02-06	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.7M	¥2,661	-	-
2025-02-06	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.5M	¥2,661	-	-
2025-02-06	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	1.7M	¥2,661	-	-
2025-02-06	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.2M	¥2,661	-	-
2025-01-27	SELL	negotiated	住友商事株式会社 SUMITOMO CORPORATION	strategic	27.5M	¥2,659	+0.0%	¥20.2B ($130.3M)
2025-01-27	BUY	unknown	株式会社BCJ-82-1 BCJ-82-1 Co., Ltd.	activist	11.7M	¥2,659	-	-
2025-01-27	BUY	unknown	光通信株式会社 Hikari Tsushin K.K.	unknown	4.7M	¥2,659	-	-
2025-01-27	BUY	unknown	株式会社UH Partners 2 UH Partners 2, Inc.	unknown	5.5M	¥2,659	-	-
2025-01-27	BUY	unknown	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	unknown	4.2M	¥2,659	-	-
2025-01-27	BUY	unknown	株式会社エスアイエル SIL Co., Ltd.	unknown	1.7M	¥2,659	-	-
2024-12-26	BUY	negotiated	住友商事株式会社 SUMITOMO CORPORATION	strategic	35.1M	¥2,664	-	-
2024-11-27	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.7M	¥2,659	-	-
2024-11-27	BUY	Market Buy	住友商事株式会社 SUMITOMO CORPORATION	strategic	35.1M	¥2,659	+0.0%	¥31.2B ($201.0M)
2024-11-27	BUY	acquisition	株式会社BCJ-82-1 BCJ-82-1 Co., Ltd.	activist	11.7M	¥2,659	+0.0%	¥30.9B ($199.4M)
2024-11-27	BUY	Market Buy	株式会社BCJ-82-1 BCJ-82-1 Co., Ltd.	activist	11.7M	¥2,659	-	-
2024-11-27	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	unknown	4.7M	¥2,659	-	-
2024-11-27	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	unknown	5.5M	¥2,659	-	-
2024-11-27	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	unknown	4.2M	¥2,659	-	-
2024-11-27	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	unknown	1.7M	¥2,659	-	-
2024-11-27	BUY	acquisition	光通信株式会社 Hikari Tsushin K.K.	unknown	4.7M	¥2,659	+0.0%	-
2024-11-27	BUY	acquisition	株式会社UH Partners 2 UH Partners 2, Inc.	unknown	5.5M	¥2,659	+0.0%	-
2024-11-27	BUY	acquisition	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	unknown	4.2M	¥2,659	+0.0%	-
2024-11-27	BUY	acquisition	株式会社エスアイエル SIL Co., Ltd.	unknown	1.7M	¥2,659	+0.0%	-
2024-11-27	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.5M	¥2,659	-	-
2024-11-27	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.2M	¥2,659	-	-
2024-11-27	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	1.7M	¥2,659	-	-
2024-10-07	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.5M	¥2,665	-	-
2024-10-07	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.7M	¥2,665	-	-
2024-10-07	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.2M	¥2,665	-	-
2024-10-07	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	1.7M	¥2,665	-0.2%	¥374M ($2.4M)
2024-10-04	BUY	Market Buy	住友商事株式会社 SUMITOMO CORPORATION	strategic	23.3M	¥2,665	-0.2%	¥18.1B ($116.8M)
2023-12-13	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.5M	¥1,855	-	-
2023-12-13	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	1.5M	¥1,855	+43.3%	¥1.1B ($6.8M)
2023-12-13	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.7M	¥1,855	-	-
2023-12-13	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.2M	¥1,855	-	-
2023-03-10	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.7M	¥1,671	-	-
2023-03-10	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	4.2M	¥1,671	+59.1%	¥618M ($4.0M)
2023-03-10	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	976.7K	¥1,671	+59.1%	¥319M ($2.1M)
2023-03-10	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.5M	¥1,671	-	-
2022-09-07	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	4.7M	¥1,648	-	-
2022-09-07	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	5.5M	¥1,648	-	-

Showing the 50 most recent of 62 filings.

Frequently asked questions

Who has been buying T-Gaia Corporation stock?: 6 distinct investors have filed 15 disclosed large-shareholding filings in T-Gaia Corporation (3738), most recently on 2025-03-04. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does T-Gaia Corporation have?: T-Gaia Corporation has 15 buy-side and 10 sell-side disclosures on record, covering ¥50.3B ($324.2M) in total reported value, spanning 2021-10-13 to 2025-03-04.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.